Home / 221,012.20-331,127.90-213,703.40

Finding the Fourth Proportional to 221,012.20, 331,127.90 and 213,703.40

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Solution

The fourth proportional to 221,012.20, 331,127.90 and 213,703.40 is: 320,177.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,012.20 : 331,127.90 = 213,703.40 : x
  2. Step 2: Convert to fraction form
    221,012.20/331,127.90 = 213,703.40/x
  3. Step 3: Cross multiply
    221,012.20x = 331,127.90 × 213,703.40
  4. Step 4: Simplify right side
    221,012.20x = 70,763,158,064.86
  5. Step 5: Solve for x
    x = 70,763,158,064.86/221,012.20
  6. Step 6: Final answer
    x = 320,177.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.